Suction device



FIG. 1 is a top plan view of a suction device showing new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a first perspective view thereof; and,

FIG. 8 is a second perspective view thereof.

The dashed lines are included for the purpose of illustrating portions of the suction device that form no part of the claimed design. 

CLAIM The ornamental design for a suction device, as shown and described. 